Reduced Risk: Ovarian Cancer. Combo estrogen/progesterone birth control pills can lower your risk of this type of cancer. The benefit starts within 3 to 6 months after starting the pill. The longer you take it, the lower your risk. Depo-Provera also lowers the risk, especially if you use it for more than 3 years.
Sporangia are the structures that house and create spores in certain organisms. As many of these organisms are non-mobile, they have no choice but to release the spores out into the environment. This allows the spores, which are haploid, the opportunity to germinate and form gametophytes.
In bryophytes the sporangium is represented by the capsule of the sporogonium. The sporangia of ferns develop on sporophylls or in their axils. Sporangia may be solitary or in groups (sori) and may be free or con-cresced (synangia).Isosporous ferns form sporangia of a single type, which produce spores that germinate in bisexual prothallia.he sporangia of ferns develop on sporophylls or in their axils. Sporangia may be solitary or in groups (sori) and may be free or con-cresced (synangia). Isosporous ferns form sporangia of a single type, which produce spores that germinate in bisexual prothallia.